By use of following website one can convert deg/min/sec to decimal.
http://www.geology.enr.state.nc.us/gis/latlon.html
The Cal Tech observatory is at
37.23389
-117.71778
Now looking for testimony of astronomer... I seem to recall it in this thread.... hmmm...
Saw your comment XBob... Will plot on MapPoint the datapoints you guys have over NM